A material is known as allotropic or polymorphic if it
A material is known as allotropic or polymorphic if it
The tensile strength of wrought iron is maximum
The tensile strength of wrought iron is maximum
Which of the following is an amorphous material?
Which of the following is an amorphous material?
Steel made from phosphate iron is
Steel made from phosphate iron is
Ball bearings are, usually, made from
Ball bearings are, usually, made from
Y-alloy contains
Y-alloy contains
In compression, a prism of brittle material will break
In compression, a prism of brittle material will break
An example of amorphous material is
An example of amorphous material is
Pipes for bicycle frames are made of
Pipes for bicycle frames are made of
When low carbon steel is heated up to lower critical temperature
When low carbon steel is heated up to lower critical temperature
When the steel is normalized, its
When the steel is normalized, its
Process of Austempering results in
Process of Austempering results in
The charge is fed into the blast furnace through the
The charge is fed into the blast furnace through the
The purpose of heat treatment is to
The purpose of heat treatment is to
The surface hardness of the following order is achieved by nitriding operation
The surface hardness of the following order is achieved by nitriding operation
The compressive strength of cast iron is __________that of its tensile strength.
The compressive strength of cast iron is __________that of its tensile strength.
The lower critical temperature
The lower critical temperature
Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is
Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is
Which is the false statement about wrought iron? It has
Which is the false statement about wrought iron? It has
Which of the following metal is used for nuclear energy?
Which of the following metal is used for nuclear energy?
Admiralty gun metal contains
Admiralty gun metal contains
The molecules in a solid move
The molecules in a solid move
Perminvar alloy having constant permeability is an alloy of
Perminvar alloy having constant permeability is an alloy of
Points of arrest for iron correspond to
Points of arrest for iron correspond to
Which of the following has a fine gold colour and is used for imitation jewellery?
Which of the following has a fine gold colour and is used for imitation jewellery?
Which of the following alloys does not have copper as one of the constituents?
Which of the following alloys does not have copper as one of the constituents?
A small percentage of boron is added to steel in order to
A small percentage of boron is added to steel in order to
The portion of the blast furnace below its widest cross-section is called
The portion of the blast furnace below its widest cross-section is called
Cast iron is manufactured in
Cast iron is manufactured in
The material in which the atoms are arranged regularly in some directions but not in others, is called
The material in which the atoms are arranged regularly in some directions but not in others, is called
The temperature required for full annealing in hypereutectoid steel is
The temperature required for full annealing in hypereutectoid steel is
Gun metal contains
Gun metal contains
Dow metal contains
Dow metal contains
In process annealing, the hypo eutectoid steel is
In process annealing, the hypo eutectoid steel is
Closed packed hexagonal space lattice is found in
Closed packed hexagonal space lattice is found in
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The property of a material due to which it breaks with little permanent distortion, is called
The property of a material due to which it breaks with little permanent distortion, is called
Pearlite consists of
Pearlite consists of
Body centered cubic space lattice is found in
Body centered cubic space lattice is found in
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A reversible change in the atomic structure of steel with corresponding change in the properties is known as
A reversible change in the atomic structure of steel with corresponding change in the properties is known as
The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is
The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is
Sulphur in cast iron
Sulphur in cast iron
Gamma iron exits at following temperature
Gamma iron exits at following temperature
Blast furnace is used to produce
Blast furnace is used to produce
The silicon steel is widely used for
The silicon steel is widely used for
Aluminium bronze contains aluminium and copper in the ratio of
Aluminium bronze contains aluminium and copper in the ratio of
Compressive strength of grey cast iron in tonnes/cm is of the order of
Compressive strength of grey cast iron in tonnes/cm is of the order of
A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as
A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as
The elastic stress strain behavior of rubber is
The elastic stress strain behavior of rubber is
Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal?
Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal?
A coarse grained steel
A coarse grained steel
Grey cast iron has
Grey cast iron has
Which of the following display properties similar to that of steel?
Which of the following display properties similar to that of steel?
Shock resisting steels should have
Shock resisting steels should have
Hardness of martensite is about
Hardness of martensite is about
In low carbon steels, ________ raises the yield point and improves the resistance to atmospheric corrosion.
In low carbon steels, ________ raises the yield point and improves the resistance to atmospheric corrosion.
Connecting rod is usually made of
Connecting rod is usually made of
The transistor is made of
The transistor is made of
The following element can't impart high strength at elevated temperature
The following element can't impart high strength at elevated temperature
Which is false statement about tempering? Tempering is done to
Which is false statement about tempering? Tempering is done to
The unit cells
The unit cells
Weld decay is the phenomenon found with
Weld decay is the phenomenon found with
Connecting rod is, usually, made from
Connecting rod is, usually, made from
Large forgings, crank shafts, axles normally contain carbon up to
Large forgings, crank shafts, axles normally contain carbon up to
Bronze is an alloy of
Bronze is an alloy of
Amorphous material is one
Amorphous material is one
Foundry crucible is made of
Foundry crucible is made of
Iron-carbon alloys containing 1.7 to 4.3% carbon are known as
Iron-carbon alloys containing 1.7 to 4.3% carbon are known as
When low carbon steel is heated up to upper critical temperature
When low carbon steel is heated up to upper critical temperature
Sulphur in steel
Sulphur in steel
Super conduction by metals is observed in the temperature range of
Super conduction by metals is observed in the temperature range of
White metal contains
White metal contains
Tungsten in steel
Tungsten in steel
Duralumin contains
Duralumin contains
Wrought iron
Wrought iron
Manganese is added in low carbon steel to
Manganese is added in low carbon steel to
Cemented carbide tools are not found to be suitable for cutting
Cemented carbide tools are not found to be suitable for cutting
In a hardening process, the hypo-eutectoid steel is
In a hardening process, the hypo-eutectoid steel is
A material is said to be allotropic, if it has
A material is said to be allotropic, if it has
Hardness of lower bainite (tempered martensite) is about
Hardness of lower bainite (tempered martensite) is about
In which of the following cases, consideration of creep is important
In which of the following cases, consideration of creep is important
Brass is an alloy of
Brass is an alloy of
Pig iron is the name given to
Pig iron is the name given to
Phosphor bronze contains
Phosphor bronze contains
White cast iron
White cast iron
The property of a material essential for spring materials is
The property of a material essential for spring materials is
Steel contains
Steel contains
An eutectoid steel consists of
An eutectoid steel consists of
The alloying element which reduces the formation of iron sulphide in steel is
The alloying element which reduces the formation of iron sulphide in steel is
White cast iron contains carbon in the form of
White cast iron contains carbon in the form of
The charge of the blast furnace consists of
The charge of the blast furnace consists of
Ferromagnetic alpha iron exists in temperature range of
Ferromagnetic alpha iron exists in temperature range of
Permalloy is a
Permalloy is a
Which of the following pipes is least corrosion resistant?
Which of the following pipes is least corrosion resistant?
Wrought iron is
Wrought iron is
Slow plastic deformation of metals under a constant stress is known as
Slow plastic deformation of metals under a constant stress is known as
Chromium when added to steel _________ the tensile strength.
Chromium when added to steel _________ the tensile strength.
Hardness of upper bainite (acicular structure) is about
Hardness of upper bainite (acicular structure) is about
The percentage of carbon in low carbon steel is
The percentage of carbon in low carbon steel is
Which of the following is used for bearing liner?
Which of the following is used for bearing liner?
Balls for ball bearings are made of
Balls for ball bearings are made of
